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# pragma once
# include "CurveEditorBase.h"
# include "HandleDrawer.h"
/**
* @brief 样条编辑器绘制器
*
* 负责控制点、选中高亮、拖拽预览线及 Handle 区域计算。
*/
class SplineEditorRenderer
{
public :
SplineEditorRenderer ( CSigmaDoc * pDoc , HandleDrawer * pHandleDrawer ) ;
/**
* @brief 使用 CDC 绘制所有控制点
*/
void DrawHandlesByCDC ( CDC * pDC , CCurveEx * pCurve ) const ;
/**
* @brief 绘制单个 Handle 或高亮当前选中
*/
void DrawHandle ( CXyDC * pDC , CDC * pScreenDC , CCurveEx * pCurve , int currentHandleIndex ) const ;
/**
* @brief 绘制指定索引的选中态 Handle
*/
void DrawSelectHandle ( CDC * pScreenDC , CXyDC * pXyDC , CCurveEx * pCurve , int nHandle , DWORD handleDrawMode ) const ;
/**
* @brief 绘制拖拽预览线（
*/
void DrawDragPreview ( CDC * pScreenDC , CXyDC * pXyDC , const CPointList & newPointList ) const ;
/**
* @brief 获取指定 Handle 的刷新区域
*/
CRect GetRangeWidthIndex ( CCurveEx * pCurve , int nIndex , CXyDC * pDC , CSize handleSize ) const ;
/**
* @brief 首节点使用稍大命中区域
*/
CRect GetFirstNodeHandleRectFocus ( CPoint point ) const ;
private :
CSigmaDoc * m_pDoc ;
HandleDrawer * m_pHandleDrawer ;
} ;